Relay

Abstract

The relay comprises a shell and a pushing piece, the shell is provided with two sliding grooves corresponding to the pushing piece, the sliding grooves are distributed in the Y-axis direction and extend in the Z-axis direction, and the two sides, in the Y-axis direction, of the pushing piece are in sliding fit with the corresponding sliding grooves in the Z-axis direction; the groove walls of the two sliding grooves are in limiting fit with the pushing piece in the Y-axis direction and the X-axis direction. By adopting the technical scheme, compared with a relay in the prior art, the impact resistance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of relays. BACKGROUND

[0002] In the prior art, a relay includes a housing, an armature assembly, a pusher, a moving spring and a stationary contact. The moving spring is provided with a moving contact. The armature assembly drives the pusher to move linearly, and the pusher drives the moving spring to move, so as to close or disconnect the moving contact and the stationary contact. The pusher in the prior art is generally connected with the armature assembly and the moving spring, and is not connected with the housing, so the anti-impact ability is poor. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to overcome the above-mentioned defects or problems in the background art, and to provide a relay which has improved anti-impact ability compared with the relay in the prior art.

[0004] To achieve the above-mentioned purpose, the following technical solutions are adopted.

[0005] The first technical solution relates to a relay, which includes a housing and a pusher. The housing is provided with two sliding grooves along the Y-axis direction and extending along the Z-axis direction corresponding to the pusher. The pusher is slidably connected with the corresponding sliding groove along the Z-axis direction at both sides along the Y-axis direction. The groove walls of the two sliding grooves are limitedly connected with the pusher along the Y-axis direction and the X-axis direction.

[0006] The second technical solution is based on the first technical solution, wherein the relay further includes an armature assembly and at least one moving spring corresponding to the pusher. The pusher includes a base body and a sliding fitting part. The armature and the moving spring are connected with the base body, so that the armature drives the moving spring to move through the pusher. The sliding fitting part is adapted to extend into the sliding groove and is slidably connected with the sliding groove.

[0007] The third technical solution is based on the second technical solution, wherein the base body is made of metal material, the sliding fitting part and the housing are made of plastic material, and the base body and the sliding fitting part are integrally formed by insert injection molding.

[0008] The fourth technical solution is based on the third technical solution, wherein the size of the sliding fitting part along the X-axis direction is greater than the thickness of the base body.

[0009] The fifth technical solution is based on the second technical solution, wherein the groove wall surface of the sliding groove is provided with a circular arc segment, the circular arc segment is in the shape of a circular arc surface, and the groove wall surface of the sliding groove farthest away from the bottom of the other sliding groove along the Y-axis direction is located at the circular arc segment.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the groove wall surface of each chute further comprises a flat section and an inward section, both of which are connected with the circular arc section, the flat section is opposite to the inward section along the Y-axis direction, the flat section is a plane perpendicular to the X-axis direction, the flat sections of the two chutes are located on the same plane, in the projection plane perpendicular to the Z-axis direction, at least one straight line passing through the projection center of the circular arc section intersects the projection of the circular arc section at two points, and the distance between the top end of the inward section along the X-axis direction and the flat section is less than the diameter of the circular arc section in the projection plane perpendicular to the Z-axis direction.

[0011] The seventh technical solution is based on the fifth or sixth technical solution, wherein the part of the sliding fitting part suitable for extending into the chute is provided with a circular-arc-shaped outer edge matched with the circular arc section, and at least one concave part is formed on the circular-arc-shaped outer edge and extends along the Z-axis direction.

[0012] The eighth technical solution is based on the second technical solution, wherein the armature assembly rotates relative to the housing around a rotation axis extending along the Y-axis direction and is provided with a swing part, the base is provided with a first fitting hole for the swing part to extend into along the Z-axis direction and a second fitting hole for the moving spring to extend into along the X-axis direction, the direction in which the swing part extends into the first fitting hole is opposite to the direction in which the moving spring extends into the second fitting hole; all positions of the pusher in contact with the swing part are closer to the rotation axis along the X-axis direction than the second fitting hole.

[0013] The ninth technical solution is based on the eighth technical solution, wherein the two sides of the first fitting hole along the Z-axis direction are provided with a first abutting part and a second abutting part suitable for abutting with the swing part; the first abutting part and the second abutting part are both outwardly turned along the X-axis direction from the hole wall of the first fitting hole; the surfaces of the first abutting part and the second abutting part suitable for contacting with the swing part are both smooth curved surfaces.

[0014] The tenth technical solution is based on the ninth technical solution, wherein the moving contact is closed downward with the static contact, the first fitting hole is located above the second fitting hole, and the first abutting part is located above the second abutting part; the part of the pusher between the first abutting part and the second abutting part is bent in the direction closer to the rotation axis along the upward direction, the outward turning directions of the first abutting part and the second abutting part are away from each other, and the first abutting part is outwardly turned away from the rotation axis.

[0015] The eleventh technical solution is based on the second technical solution, and the relay further corresponds to the pushing piece and comprises a coil assembly and two supporting pieces. The relay further comprises at least two load terminals. The coil assembly comprises a coil frame, a coil winding and a coil terminal, and is provided with two magnetic driving ends. The coil winding is wound on the coil frame, and the winding axis of the coil winding extends along the Z-axis direction. The coil terminal is electrically connected with the coil winding and penetrates the coil frame and the shell along the Z-axis direction downward. The two magnetic driving ends are arranged along the Z-axis direction, and the two magnetic driving ends drive the armature assembly to rotate by converting the polarity. Each magnetic driving end is provided with a protruding part on each side along the Y-axis direction. The two supporting pieces are fixed relative to the coil assembly and support the armature assembly. The shell is provided with a slot for the two supporting pieces to be correspondingly inserted along the Z-axis direction. Each supporting piece is provided with two connecting holes corresponding to the two protruding parts on the same side along the Y-axis direction for insertion and fitting. Each load terminal is fixedly connected with the moving spring and the stationary contact. Each load terminal penetrates the shell along the Z-axis direction downward and is fixedly connected with the shell.

[0016] Compared with the prior art, the above-mentioned solution has the following beneficial effects:

[0017] In the first technical solution, the two sliding grooves are respectively slidably connected with the pushing piece along the Z-axis direction, and the groove walls of the two sliding grooves are limitingly connected with the pushing piece along the Y-axis direction and the X-axis direction. The determination of the movement direction of the pushing piece can be improved, and the freedom degree of the pushing piece in other directions can be constrained. Therefore, the pushing piece is less likely to displace or deform along the X-axis direction and the Y-axis direction when subjected to uncertain impact, and the reliability of the relay is improved.

[0018] In the third technical solution, the sliding fitting part is made of plastic material, which is more easily slidably connected with the shell also made of plastic material and is less likely to produce scrapes to cause jamming or deflection. The sliding fitting part is integrally formed with the base by insert injection molding, and has higher dimensional accuracy and smaller dimensional tolerance. The base is made of metal material, which can avoid the situation that the pushing piece is softened or even melted due to the heating of the moving spring set, so that the closing stroke of the moving spring set does not match the design, and the load capacity of the relay is reduced. Therefore, the load capacity and reliability of the relay are improved.

[0019] In the fourth technical solution, the size of the sliding fitting part along the X-axis direction is larger than the thickness of the base along the X-axis direction, which is more conducive to the case that the gap between the sliding fitting part and the sliding groove is the same, so that the pushing piece is less likely to deflect along the X-axis direction to cause jamming and change the contact point with the moving spring to avoid the stroke of the moving contact deviating from the design purpose, and the distance between the moving contact and the stationary contact is ensured, thereby ensuring the load capacity of the relay.

[0020] In the fifth technical solution, the groove wall surface of the chute is located on the circular arc segment farthest from the bottom of the other chute along the Y-axis direction, which is more conducive to resisting the impact force of the pushing piece along the Y-axis direction, so that the impact force is dispersed to the shell, and the circular arc segment can automatically correct the posture of the pushing piece when the pushing piece is subjected to an impact force in an uncertain direction.

[0021] In the sixth technical solution, the straight segment is provided, which is more conducive to guiding the pushing piece when it is inserted into the chute along the Z-axis direction. The distance between the vertex of the inwardly converging segment and the straight segment is less than the diameter of the circular arc segment, and the sector angle of the circular arc segment is greater than 180 degrees, which can maintain the stability of the circular arc segment and prevent the circular arc segment from being deformed. At the same time, by providing the inwardly converging segment, the deflection amount of the pushing piece is effectively limited when it is deflected on the plane formed by the X-axis and the Y-axis, which can improve the certainty of the movement direction of the pushing piece, constrain the freedom degree of the pushing piece in other directions, and prevent the pushing piece from being displaced or deformed along the X-axis direction and the Y-axis direction when subjected to an uncertain impact, thereby improving the reliability of the relay.

[0022] In the seventh technical solution, the sliding fit part is provided with an inward recess, which can reduce the contact area with the chute and is less likely to rub or jam, and the sliding is smoother.

[0023] In the eighth technical solution, the armature assembly rotates around the rotation axis extending along the Y-axis direction, so that the forces in all directions acting on the armature assembly can be well transmitted to the shell, thereby improving the impact resistance of the relay. The pushing piece is provided with a first matching hole for the swing part to extend into along the Z-axis direction and a second matching hole for the moving spring to extend into along the X-axis direction, and the second matching hole for the moving spring to extend into along the X-axis direction can reduce the height of the contact part along the Z-axis direction, thereby saving the space of the relay along the Z-axis direction. All positions of the pushing piece in contact with the swing part are closer to the rotation axis along the X-axis direction than the second matching hole (i.e., the position of the pushing piece in contact with the moving spring assembly), which is conducive to reducing the movement stroke of the pushing piece along the Z-axis direction while ensuring the spacing between the movable contact and the static contact, and is particularly conducive to reducing the highest point of the movement stroke of the pushing piece, thereby preventing the highest point from exceeding the highest point of the coil assembly, and thus saving the height of the relay along the Z-axis direction.

[0024] In the ninth technical solution, the two sides of the first matching hole along the Z-axis direction are respectively provided with a first abutting portion and a second abutting portion adapted to abut against the swing portion, and the first abutting portion and the second abutting portion are both outwardly turned from the hole wall of the first matching hole along the X-axis direction, so that the contact point of the swing portion and the pushing piece can move along the outward turning direction, which is conducive to reducing the scraping between the swing portion and the pushing piece or the base body made of metal. The surfaces of the first abutting portion and the second abutting portion adapted to contact the swing portion are both smooth curved surfaces, the friction coefficient between the pushing piece and the swing portion is smaller, and the service life of the swing portion is higher. By providing the first abutting portion and the second abutting portion outwardly turned along the X-axis direction, the pushing piece can be made thinner, and the pushing piece can always correctly abut against the swing portion, which is conducive to realizing the miniaturization of the relay and ensuring that the swing portion can always abut against the second abutting portion at the lowest point, so as to ensure the travel distance of the overstroke along the movement direction of the pushing piece when the pushing piece enters the overstroke through the elastic piece after the moving contact and the stationary contact are contacted, so that the moving contact can always reliably abut against the stationary contact.

[0025] In the tenth technical solution, the part of the pushing piece between the first abutting portion and the second abutting portion is bent, which can reduce the size of the pushing piece along the Z-axis direction, and is more conducive to realizing the above functions in the case of small space in the Z-axis direction. In particular, when the swing portion is biased upward relative to the main body, the distance between the highest point of the swing portion after upward swinging and the lowest point of the swing portion after downward swinging along the X-axis direction will be larger, and the part of the pushing piece between the first abutting portion and the second abutting portion is bent, so that the swing portion can correctly abut against the first abutting portion and the second abutting portion when the swing portion swings upward to the highest point and swings downward to the lowest point, and the moving contact can correctly close or open the stationary contact. When the part of the pushing piece between the first abutting portion and the second abutting portion is bent, the outward turning directions of the first abutting portion and the second abutting portion are away from each other, which is conducive to making the contact point of the swing portion and the first abutting portion and the second abutting portion closer along the X-axis direction, and avoiding that the swing portion generates a large reciprocating force on the pushing piece along the X-axis direction when the swing portion drives the pushing piece to move.

[0026] In the eleventh technical solution, each coil terminal and each load terminal extends downward along the Z-axis direction, which is convenient for electrical connection with the circuit board.

[0027] In the eleventh technical solution, the two supporting pieces are fixed relative to the coil assembly and are located on both sides of the coil assembly along the Y-axis direction, which can effectively support the armature assembly, so that the armature assembly can rotate relative to the coil assembly.

[0028] In the eleventh technical solution, the connecting hole on the supporting piece and the protruding portion on the magnetic driving end are inserted and matched along the Y-axis direction, which can more accurately position the supporting piece relative to the yoke. Since the supporting piece is the movement reference of the armature assembly, the attracting portion can more accurately attract the magnetic driving end when the armature assembly rotates relative to the coil assembly.

[0029] In the eleventh technical solution, the supporting member is not only inserted and matched with the protruding part of the magnetic driving end along the Y-axis direction, but also inserted and matched with the slot of the shell along the Z-axis direction, the freedom of the supporting member is completely limited, which is more conducive to supporting the armature assembly, so that the rotating axis of the armature assembly cannot move along the X-axis direction, and when the relay is impacted, the armature assembly with large mass can transmit the impact force to the supporting member through the protruding shaft, and the supporting member can transmit the force to the shell, so that the relative displacement between the components is not easy to occur. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments, the following briefly introduces the drawings needed to be used:

[0031] Figure 1 is a perspective view of the relay in embodiment one except the cover body;

[0032] Figure 2 is a perspective view of the first seat body in embodiment one;

[0033] Figure 3 is a top view of the first seat body in embodiment one;

[0034] Figure 4 is a partial enlarged view of A part of Figure 3

[0035] Figure 5 is a perspective view of the second seat body in embodiment one;

[0036] Figure 6 is a perspective view of the magnetic circuit unit in embodiment one;

[0037] Figure 7 is a structural schematic view of the magnetic circuit unit in embodiment one;

[0038] Figure 8 is a perspective view of the supporting member in embodiment one;

[0039] Figure 9 is a perspective view of the contact part in embodiment one;

[0040] Figure 10 is a perspective view of the third load terminal and each static contact group in embodiment one;

[0041] Figure 11 is a perspective view of the pushing member in embodiment one;

[0042] Figure 12 is a top view of the pushing member in embodiment one;

[0043] Figure 13 is a partial enlarged view of B part of Figure 12

[0044] ​​Figure 14 Fig. 7 is a schematic view of the engagement between the pusher and the first seat of the embodiment one;

[0045] Figure 15 Fig. 8 is a partial enlarged view of the C portion of Fig. 7; Figure 14

[0046] Figure 16 Fig. 9 is a perspective view of the relay, excluding the cover, of the embodiment one;

[0047] Figure 17 Fig. 10 is a partial enlarged view of the D portion of Fig. 9; Figure 16

[0048] Figure 18 Fig. 11 is a schematic view of the electrical structure of the relay of the embodiment one;

[0049] Figure 19 Fig. 12 is a schematic view of the relay of the embodiment one when the two switches are in the open state;

[0050] Figure 20 Fig. 13 is a schematic view of the relay of the embodiment one when the two switches are in the closed state;

[0051] Figure 21 Fig. 14 is a perspective view of the first assembly of the embodiment one;

[0052] Figure 22 Fig. 15 is a perspective view of the second assembly of the embodiment one;

[0053] Figure 23 Fig. 16 is a bottom view of the relay of the embodiment one;

[0054] Figure 24 Fig. 17 is a sectional view along the E-E direction of Fig. 16; Figure 23

[0055] Figure 25 Fig. 18 is a perspective view of the pusher of the embodiment two.

[0056] Explanation of the main reference numerals:

[0057] ​​​1. relay; 10. housing; 11. base; 110. first seat; 111. coil holder mounting slot; 112. slot; 113. sliding slot; 113a. straight section; 113b. circular arc section; 113c. inwardly retracted section; 114. coil terminal hole; 115. first limit block; 116. second limit block; 117. first interval; 118. first clamping block; 120. second seat; 121. load terminal hole; 122. insertion block; 123. first load terminal hole; 124. second load terminal hole; 125. third load terminal hole; 126. second clamping block; 130. third seat; 140. fourth seat; 150. fifth seat; 160. sixth seat; 170. seventh seat; 20. magnetic circuit portion; 21. magnetic circuit unit; 21a. first magnetic circuit unit; 21b. second magnetic circuit unit; 210. coil assembly; 211. coil holder; 212. coil winding; 213. coil terminal; 214. core; 215. yoke; 216. magnetic drive end; 217. protruding portion; 220. armature assembly; 221. permanent magnet; 222. armature; 223. main body; 224. protruding shaft; 225. oscillating portion; 226. attraction portion; 227. first plane; 228. first straight line; 229. first intersection point; 230. support member; 231. connecting hole; 232. shaft hole; 30. contact portion; 31. movable spring group; 32. stationary contact group; 33. load terminal; 34. switch; 31a. first movable spring group; 31b. second movable spring group; 310. movable spring; 311. movable contact; 312. movable spring body; 313. elastic member; 314. movable contact group; 31c. first movable contact group; 31d. second movable contact group; 315. fixed end; 316. moving end; 32a. first stationary contact group; 32b. second stationary contact group; 320. stationary contact; 33a. first load terminal; 33b. second load terminal; 33c. third load terminal; 330. common terminal; 331. connecting portion; 332. first arm; 333. second arm; 34a. first switch; 34b. second switch; 40. pushing portion; 41. pushing member; 41a. first pushing member; 41b. second pushing member; 410. base body; 411. sliding fit portion; 411a. recessed portion; 412. first fit hole; 413. second fit hole; 414. first abutment portion; 415. second abutment portion; 51. first combination; 52. second combination; P. winding axis; Q. rotation axis. DETAILED DESCRIPTION

[0058] In the claims and specification, the terms "first", "second", or "third" and the like, unless otherwise specified, are used for distinguishing between similar objects and are not necessarily used to describe a particular sequential order.

[0059] In the claims and specification, unless otherwise stated, the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicate directions or positions based on the directions and positions shown in the drawings and are used for convenience in simplifying the description only and are not intended to imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation.

[0060] In the claims and specification, unless otherwise stated, the terms "fixedly connected" or "fixed connection" should be interpreted broadly as any connection manner between two objects without displacement relationship and relative rotation relationship, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0061] In the claims and specification, unless otherwise stated, the terms "include", "have" and their variants mean "contain but not limited to".

[0062] In the claims and specification, unless otherwise stated, the term "moving spring" includes the moving spring body, the moving contact and the elastic member when the elastic member is provided between the moving spring body fixedly connected with the moving contact and the pusher, and includes the moving spring body and the moving contact when there is no elastic member.

[0063] In the claims and specification, unless otherwise stated, the term "provided with" means that the technical feature located after it is part of the technical feature located before it.

[0064] In the claims and specification, unless otherwise stated, the term "extend downward" means that the coil terminal and the load terminal extend downward along the Z-axis direction to the relay body which is collectively composed of the housing, the coil assembly, the armature assembly, the switch and the pusher. When the magnetic circuit unit includes the support member, the support member is also part of the relay body.

[0065] In the claims and specification, unless otherwise stated, the term "group" is a collective concept, that is, the "moving spring group" is a specific collection of moving springs formed by at least one moving spring, the "static contact group" is a specific collection of static contacts formed by at least one static contact, and the "moving contact group" is a specific collection of moving contacts formed by at least one moving contact.

[0066] In the claims and specification, unless otherwise stated, the term "correspondingly arranged" means that the number of the two is the same and one-to-one correspondence.

[0067] In the claims and specification, unless otherwise stated, the term "extension direction of the armature" refers to the arrangement direction of the two attraction portions of the armature.

[0068] In the claims and specification, unless otherwise defined, the term "symmetrical plane of the two armatures" refers to a plane parallel to the extension direction of the armatures and located in the middle of the two armatures.

[0069] In the claims and specification, unless otherwise defined, the term "the first clamping block and the second clamping block are clamped along the X-axis direction" refers to that, in the clamping process, the first clamping block and / or the second clamping block elastically deforms perpendicular to the X-axis direction until the first clamping block and the second clamping block are inserted into place and the deformation is restored, so that the first clamping block and the second clamping block abut each other along the X-axis direction, and the first assembly and the second assembly cannot be separated from each other along the X-axis direction.

[0070] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings.

[0071] Embodiment One

[0072] Referring to Figure 1 , Figure 1 The relay 1 in embodiment one is shown. As Figure 1 shown, the relay 1 in this embodiment includes a housing 10, a magnetic circuit part 20, a contact part 30, and a push part 40.

[0073] As Figure 1 shown, the housing 10 includes a base 11 and a cover (not shown in the figure), and the base 11 includes a first seat body 110 and a second seat body 120 which are detachably fixed to each other.

[0074] As Figure 1As shown, the magnetic circuit part 20 includes at least two magnetic circuit units 21, in this embodiment, the number of the magnetic circuit units 21 is two, which are a first magnetic circuit unit 21a and a second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two magnetic circuit units 21 are the same. The contact part 30 includes a moving spring group 31, a stationary contact group 32, and a load terminal 33. In this embodiment, "group" is a collective concept, for example, "the moving spring group 31" is a specific collection of moving springs formed by at least one moving spring, and "the stationary contact group 32" is a specific collection of stationary contacts formed by at least one stationary contact. The number of the moving spring group 31 and the stationary contact group 32 is the same as the number of the magnetic circuit units 21, which is two, and they are correspondingly arranged with the magnetic circuit units 21; specifically, the two moving spring groups 31 include a first moving spring group 31a corresponding to the first magnetic circuit unit 21a and a second moving spring group 31b corresponding to the second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two moving spring groups 31 are the same. The two stationary contact groups 32 include a first stationary contact group 32a corresponding to the first magnetic circuit unit 21a and a second stationary contact group 32b corresponding to the second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two stationary contact groups 32 are the same. The number of the load terminal 33 is three, which are a first load terminal 33a, a second load terminal 33b, and a third load terminal 33c.

[0075] As shown, Figure 1 The pushing part 40 includes a pushing piece 41. The number of the pushing piece 41 is the same as the number of the magnetic circuit units 21, which is two, and they are correspondingly arranged with the magnetic circuit units 21. Specifically, the two pushing pieces 41 include a first pushing piece 41a corresponding to the first magnetic circuit unit 21a and a second pushing piece 41b corresponding to the second magnetic circuit unit 21b, and in this embodiment, the shapes and structures of the two pushing pieces 41 are the same.

[0076] As shown, Figure 2 , Figure 3 and Figure 4 , Figure 2 , Figure 3 and Figure 4 shows the first seat body 110 in this embodiment. The first seat body 110 is made of plastic material as a whole. As shown, Figure 2 The first seat body 110 is provided with a coil holder mounting slot 111, two insertion slots 112, and two sliding slots 113 corresponding to each magnetic circuit unit 21. The coil holder mounting slot 111, the two insertion slots 112, and the two sliding slots 113 are sequentially arranged along the X-axis direction and all extend along the Z-axis direction. The coil holder mounting slot 111 and the two insertion slots 112 are used to connect the corresponding magnetic circuit units 21. The two sliding slots 113 are used to connect the corresponding pushing pieces 41. As shown, Figure 3 and Figure 4As shown, the two sliding grooves 113 are provided with openings opposite to each other along the Y-axis direction. The wall surface of each sliding groove 113 is sequentially provided with a flat section 113a, a circular arc section 113b and a converging section 113c. Among them, the flat section 113 of each sliding groove 113 is closer to the coil holder mounting groove 111 along the X-axis direction than the circular arc section 113b and the converging section 113c. The flat section 113 is a plane and is perpendicular to the X-axis direction and away from the coil holder mounting groove 111. The circular arc section 113b is connected to the flat section 113a at one end and connected to the converging section 113c at the other end. The circular arc section 113b is a circular arc surface type, the bottom of the wall surface of the sliding groove 113 along the Y-axis direction is formed on the circular arc section 113b, and in the projection plane perpendicular to the Z-axis direction, at least one straight line passing through the projection center of the circular arc section 113b intersects the projection of the circular arc section 113b at two points. The converging section 113c connects the circular arc section 113b and converges in the direction close to the flat section 113a along the X-axis direction, and the distance between the top end of the converging section 113c along the X-axis direction and the flat section 113a is less than the diameter of the projection of the circular arc section 113b in the projection plane perpendicular to the Z-axis direction. As shown in Figure 2 As shown, at least two coil terminal holes 114 are arranged in the coil holder mounting groove 111, and the number of coil terminal holes 114 in this embodiment is three. Each coil terminal hole 114 is arranged along the Y-axis direction and penetrates the first seat body 110 along the Z-axis direction. The first seat body 110 is provided with a first limiting block 115 and a second limiting block 116 at one end away from the coil holder mounting groove 111 along the X-axis direction, and the first limiting block 115 is located above the second limiting block 116 along the Z-axis direction. The number of first limiting blocks 115 is one, which is located in the middle of the first seat body 110 along the Y-axis direction and extends out of the coil holder mounting groove 111 along the X-axis direction. In this embodiment, the second limiting block 116 is divided into two groups corresponding to the magnetic circuit unit 21. The two groups of second limiting blocks 116 are arranged along the Y-axis direction. Each group of second limiting blocks 116 includes two second limiting blocks 116 arranged along the Y-axis direction, and a first interval 117 is formed between the two second limiting blocks 116. The two second limiting blocks are provided with a first clamping block 118 on the side adjacent to each other along the Y-axis direction. In this embodiment, the length of the first limiting block 115 extending along the X-axis direction is greater than the length of each second limiting block 116 extending along the X-axis direction.

[0077] Referring to Figure 5 , Figure 5 The second seat body 120 in this embodiment is shown. The second seat body 120 is made of plastic material as a whole. Figure 5As shown, the second seat body 110 is provided with load terminal holes 121 and insertion blocks 122. The number of the load terminal holes 121 is the same as that of the load terminals 33, which is three, and the load terminal holes 121 are arranged correspondingly to the load terminals 33. Specifically, the three load terminal holes 121 include a first load terminal hole 123 corresponding to the first load terminal 33a, a second load terminal hole 124 corresponding to the second load terminal 33b, and a third load terminal hole 125 corresponding to the third load terminal 33c. Each of the load terminal holes 121 penetrates the second seat body 120 along the Z-axis direction. Among them, the first load terminal hole 123 and the second load terminal hole 124 are arranged along the Y-axis direction. The third load terminal hole 125 is arranged at the middle of the second seat body 120 along the Y-axis direction. The insertion blocks 122 are arranged at one end of each load terminal hole 121 away from the load terminal holes 121 along the X-axis direction. The number of the insertion blocks 122 is the same as that of the first intervals 117, which is two, and the insertion blocks 122 are arranged correspondingly to the first intervals 117. The two insertion blocks 122 are arranged along the Y-axis direction. Each insertion block 122 is adapted to extend into the corresponding first interval 117 along the X-axis direction. Each insertion block 122 is provided with a second clamping block 126 corresponding to the first clamping block 118 on both sides of the insertion block 122 along the Y-axis direction.

[0078] In this embodiment, the cover body is arranged downwardly along the Z-axis direction on the base 11 and is fixedly connected with the base 11.

[0079] Referring to Figure 1 , Figure 6 and Figure 7 . Figure 1 , Figure 6 and Figure 7 show the magnetic circuit unit 21 in this embodiment. The magnetic circuit unit 21 is attached to the first seat body 110. As shown in Figure 1 , Figure 6 and Figure 7 , each magnetic circuit unit 21 includes a coil assembly 210, an armature assembly 220, and two supporting members 230.

[0080] As shown in Figure 1 , the coil assembly 210 is fixed relative to the first seat body 110 and is accommodated in the housing 10. As shown in Figure 6 and Figure 7As shown, the coil assembly 210 includes a coil frame 211, a coil winding 212, coil terminals 213, a core 214 and two yokes 215. The coil frame 211 is adapted to be placed into the corresponding coil frame mounting slot 111 along the Z-axis direction and fixedly connected with the first seat body 110. The coil frame 211 includes two retaining walls arranged along the Z-axis direction and a shaft body located between the two retaining walls, the shaft body extending along the Z-axis direction. The coil winding 212 is wound on the shaft body of the coil frame 211. The winding axis P of the coil winding 212 extends along the Z-axis direction. The number of the coil terminals 213 is the same as that of the coil terminal holes 114, both being three, and the coil terminals 213 are arranged correspondingly with the coil terminal holes 114. Each coil terminal 213 is fixedly connected with the coil frame 211 and penetrates the retaining wall below the coil frame 211 along the Z-axis direction. When the coil frame 211 is fixedly connected with the first seat body 110, each coil terminal 213 also penetrates the corresponding coil terminal hole 114 along the Z-axis direction and extends downward along the Z-axis direction. In the embodiment, the "extending downward" means that each coil terminal 213 and each load terminal 33 extend downward along the Z-axis direction out of the relay body which is composed of the shell 10, each coil frame 211, each coil winding 212, each core 214, each yoke 215, each armature assembly 220, each supporting member 230, each moving spring group 31, each static contact group 32 and each pushing member 41. The core 214 extends along the Z-axis direction and is inserted into the shaft body of the coil frame 210. The two yokes 215 are arranged along the Z-axis direction, one end of each yoke 215 is fixedly connected with the core 214, and the other end forms a magnetic driving end 216. The two magnetic driving ends 216 drive the armature assembly 220 to rotate relative to the coil assembly 210 by converting the magnetic polarity. In the embodiment, each magnetic driving end 216 is provided with a protruding part 217 on both sides along the Y-axis direction.

[0081] As Figure 6 and Figure 7As shown, the armature assembly 220 rotates relative to the coil assembly 210 about a rotation axis Q extending along the Y-axis direction and is accommodated in the housing 10. The armature assembly 220 includes a permanent magnet 221, two armatures 222, a main body 223, two protruding shafts 224, and a swing portion 225, which are fixed to each other. The permanent magnet 221 is disposed in the main body 223 and is provided with two magnetic pole surfaces. The two armatures 222 are fixed to the two magnetic pole surfaces of the permanent magnet 221, respectively. The two armatures 222 extend in parallel to each other. Each armature 222 is partially located in the main body 223, and both ends of each armature 222 along the extension direction thereof extend out of the main body 223 and form an attraction portion 226 adapted to be attracted to a corresponding magnetic driving end 216. In this embodiment, the “extension direction of the armature 222” refers to the arrangement direction of the two attraction portions 226 of the armature 222. The two protruding shafts 224 extend out of the main body 223 from both sides of the main body 223 along the Y-axis direction and away from each other along the Y-axis direction. The two protruding shafts 224 are used to establish a rotation connection relationship with the two supporting members 230. The swing portion 225 extends out of the main body 223 perpendicularly to the Y-axis direction to cooperate with the push member 41. In this embodiment, the extension direction of the swing portion 225 is perpendicular to the extension direction of the armature 222. Specifically, in this embodiment, the intersection of the first plane 227 and the first straight line 228 is the first intersection point 229, which is located above the rotation axis Q along the Z-axis direction. The first plane 227 is a plane passing through the rotation axis Q and parallel to the extension direction of the armature 222. The first straight line 228 is a straight line perpendicular to the first plane 227 passing through the contact point between the swing portion 225 and the push member 41 when the moving spring set 31 and the stationary contact point set 32 are closed. In this embodiment, the main body 223, the two protruding shafts 224, and the swing portion 225 are made of plastic material and are integrated. The two armatures 222 are made of metal material. The main body 223, the two protruding shafts 224, the swing portion 225, the permanent magnet 221, and the two armatures 222 are integrally formed by insert injection molding to form the armature assembly 220 in this embodiment. As can be seen from the configuration of the armature assembly 220 in this embodiment, the relay 1 in this embodiment is a magnetic latching relay. Of course, in other embodiments, it can not have a magnetic latching function.

[0082] Referring to Figure 6 and Figure 8 , Figure 6 and Figure 8 The two supporting members 230 in this embodiment are shown. As Figure 6 and Figure 8As shown, the two supports 230 are fixed relative to the coil assembly 210 and located within the housing 10. The two supports 230 are used to support the armature assembly 220. Specifically, each support 230 is located along the Y-axis direction on the two sides of the coil assembly 210 respectively, and is arranged in correspondence with the slot 112. The two supports 230 are adapted to be inserted into the corresponding slot 112 along the Z-axis direction downward. Each support 230 extends along the Z-axis direction. Each support 230 is provided with two connecting holes 231 along the Z-axis direction. The two connecting holes 231 are adapted to be inserted into the two protruding portions 217 on the same side along the Y-axis direction correspondingly. Each support 230 is provided with an axle hole 232 which is rotatably matched with the corresponding protruding axle 224, and the axle hole 232 is located between the two connecting holes 231 along the Z-axis direction.

[0083] Referring to Figure 1 , Figure 9 and Figure 10 , Figure 1 , Figure 9 and Figure 10 The contact portion 30 in the present embodiment is shown. As shown in Figure 1 , the contact portion 30 is arranged on the second seat body 120. The contact portion 30 is arranged along the X-axis direction with the magnetic circuit portion 20.

[0084] As shown in Figure 9As shown, each moving spring group 31 is arranged along the Y-axis direction. Each moving spring group 31 extends along the X-axis direction. Each moving spring group 31 includes at least one moving spring 310, more preferably, each moving spring group 31 includes at least two moving springs 310. In this embodiment, each moving spring group 31 includes three moving springs 310. In the same moving spring group 31, each moving spring 310 is arranged along the Y-axis direction. Each moving spring 310 includes at least one moving contact 311, a moving spring body 312, and an elastic element 313. In this embodiment, each moving spring 310 has one moving contact 311. All moving contacts 311 in the same moving spring group 31 form a moving contact group 314. In this embodiment, the number of moving contact groups 314 is the same as the number of moving spring groups 31, both being two. The two moving contact groups 314 include a first moving contact group 31c belonging to the first moving spring group 31a and a second moving contact group 31d belonging to the second moving spring group 31b. The movable spring body 312 has a fixed end 315 and a movable end 316. The fixed end 315 is connected to the load terminal 33. The movable end 316 extends away from the fixed end 315 along the extending direction of the movable spring body 312. In this embodiment, the fixed end 315 and the movable end 316 are arranged along the X-axis. The movable contact 311 is fixed to the movable spring body 312 and close to the movable end 316. One end of the elastic element 313 is connected to the movable spring body 312, and the other end is adapted to be pushed by the pusher 41. In this embodiment, the elastic element 313 is a compression spring. One end of the elastic element 313 is connected to the movable spring body 312 at the location of the movable contact 311. The other end of the elastic element 313 is adapted to be pushed by the pusher 41 and forms a gap with the movable end 316 along the movement direction of the pusher 41.

[0085] like Figure 9 As shown, each stationary contact group 32 has a stationary contact 320 corresponding to all moving contacts 311 in the corresponding moving spring group 31. In this embodiment, the moving contact 311 closes with the stationary contact 320 downward along the Z-axis and opens with the stationary contact 320 upward along the Z-axis. Correspondingly, the moving contact group 314 closes with the corresponding stationary contact group 32 downward along the Z-axis and opens with the corresponding stationary contact group 32 upward along the Z-axis. Specifically, the moving contact group 31c closes or opens with the stationary contact group 32a along the Z-axis, and the moving contact group 31d closes or opens with the stationary contact group 32b along the Z-axis. In this embodiment, the moving spring group 31 and the corresponding stationary contact group 32 constitute a switch 34. Specifically, the first moving spring group 31a and the first stationary contact group 32a constitute a first switch 34a, and the second moving spring group 31b and the second stationary contact group 32b constitute a second switch 34b.

[0086] like Figure 1 , Figure 9 and Figure 10As shown, each load terminal 33 is provided corresponding to each load terminal hole 121. Specifically, the first load terminal 33a corresponds to the first load terminal hole 123, the second load terminal 33b corresponds to the second load terminal hole 124, and the third load terminal 33c corresponds to the third load terminal hole 125. Each load terminal 33 is fixed to the second base 120 and passes through the corresponding load terminal hole 121 along the Z-axis direction, extending downwards out of the aforementioned relay body. Specifically, the first load terminal 33a and the second load terminal 33b are arranged along the Y-axis direction, and the portion of the third load terminal 33c extending downwards out of the base 11 is located in the middle of the base 11 along the Y-axis direction. The moving spring group 31 and the stationary contact group 32 in each switch 34 are respectively connected to different load terminals 33. At least one load terminal 33 is simultaneously connected to at least two stationary contact groups 32 to form a common terminal 330. In this embodiment, the first load terminal 33a is fixedly connected to and electrically connected to the first moving spring group 31a. The second load terminal 33b is fixedly connected to and electrically connected to the second moving spring group 31b. The third load terminal 33c is fixedly connected to and electrically connected to the first stationary contact group 32a and the second stationary contact group 32b to form a common terminal 330. In this embodiment, each load terminal 33 is provided with a connecting portion 331 perpendicular to the Z-axis direction. The connecting portion 331 is used to connect the stationary contact group 32 and / or the moving spring group 31. In this embodiment, the connecting portion 331 of the common terminal 330 is located below the connecting portions 331 of the other two load terminals 33 along the Z-axis direction, and the connecting portions 331 of the other two load terminals 33 are located on the same plane along the Z-axis direction. Specifically, the connecting portion 331 of the third load terminal 33c is located below the connecting portions 331 of the first load terminal 33a and the second load terminal 33b along the Z-axis direction, and the connecting portions 331 of the first load terminal 33a and the second load terminal 33b are located on the same plane along the Z-axis direction. Figure 10 As shown, in this embodiment, the connection portion 331 of the common terminal 330 is provided with a first arm 332 and a second arm 333. The first arm 332 and the second arm 333 extend away from each other along the X-axis and are respectively provided for two magnetic circuit units 20. In this embodiment, both the first arm 332 and the second arm 333 are connected to the stationary contact group 32, and the positions of the first arm 332 and the second arm 333 along the X-axis are closer to the magnetic circuit portion 20 than the connection portions 331 of the two other load terminals 33. Specifically, the first arm 332 is connected to the first stationary contact group 32a, and the second arm 333 is connected to the second stationary contact group 32b. The positions of the first arm 332 and the second arm 333 along the X-axis are closer to the magnetic circuit portion than the connection portions 331 of the first load terminal 33a and the connection portions 332 of the second load terminal 33b.

[0087] See Figure 11 to Figure 17 , Figure 11 to Figure 17The pusher 41 in the present embodiment is shown. Each pusher 41 is attached to the first seat body 110 and located in the housing 10. In the present embodiment, the pusher 41 moves along the Z-axis direction relative to the housing 10. As shown in Figure 11 , Figure 16 and Figure 17 , in the present embodiment, the pusher 41 includes a base body 410 and two sliding fitting portions 411. The base body 410 is provided with a first fitting hole 412 and a second fitting hole 413 from top to bottom along the Z-axis direction. The first fitting hole 412 is for the swing portion 225 to extend into from the coil assembly 210. The second fitting hole 413 is for the moving spring set 31 to extend into along the X-axis direction towards the winding axis P. Therefore, in the present embodiment, the fitting direction of the swing portion 225 and the fitting direction of the moving spring set 31 relative to the pusher 41 are substantially opposite. The two sides of the first fitting hole 412 along the Z-axis direction are respectively provided with a first abutting portion 414 and a second abutting portion 415 from top to bottom, which are adapted to abut against the swing portion 225. Since in the present embodiment, the moving contact set 314 is closed with the corresponding stationary contact set 32 along the Z-axis direction downwards and is disconnected with the corresponding stationary contact set 32 along the Z-axis direction upwards, the swing portion 225 abuts against the second abutting portion 415 downwards in the closing stroke and abuts against the first abutting portion 414 upwards in the disconnecting stroke. In the present embodiment, the first abutting portion 414 and the second abutting portion 415 are both outwardly flanged along the X-axis direction from the hole wall of the first fitting hole 412. The surfaces of the first abutting portion 414 and the second abutting portion 415 adapted to abut against the swing portion 225 form smooth curved surfaces, which are arc surfaces in the present embodiment. In the present embodiment, the portion of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent along the upward direction towards the direction closer to the rotation axis Q, and the flanging directions of the first abutting portion 414 and the second abutting portion 415 are opposite to each other, specifically, the flanging direction of the first abutting portion 414 is towards the load terminal 33 along the X-axis direction, and the flanging direction of the second abutting portion 415 is towards the rotation axis Q along the X-axis direction. As shown in Figure 12 and Figure 13 , the two sliding fitting portions 411 are respectively provided on the two sides of the base body 410 along the Y-axis direction. The portion of the sliding fitting portion 411 adapted to extend into the sliding groove 113 is substantially circular arc-shaped in the projection plane perpendicular to the Z-axis direction, and at least one concave portion 411 is formed on the outer edge of the circular arc, which extends along the Z-axis direction. In the present embodiment, the number of the concave portions 41 is two. As shown in Figure 14 and Figure 15As shown, the two sliding fit portions 411 slide fit with the two sliding grooves 113 of the housing 10 along the movement direction of the pusher 41, which is the Z-axis direction in this embodiment. The two sliding grooves 113 generally wrap the part of the corresponding sliding fit portion 411 extending into the sliding groove 113 due to the existence of the inwardly-retracted section 113c, and the two sliding grooves 113 limit the movement of the pusher 41 along the Y-axis direction. Each sliding groove 113 limits the movement of the corresponding sliding fit portion 411 along the X-axis direction. In this embodiment, the base body 410 is made of metal, specifically stainless steel, and is a sheet metal part, and in other embodiments, it can be a cast part, and the metal material can also be aluminum or aluminum alloy. The sliding fit portion 411 is made of plastic. The base body 410 and the two sliding fit portions 411 are integrally formed by insert injection molding. The size of the sliding fit portion 411 along the X-axis direction is larger than the thickness of the base body 410 along the X-axis direction. In other embodiments, only the part of the base body 410 suitable for contacting the moving spring set 31 is made of metal, i.e., the two edges of the second fitting hole 413 along the Z-axis direction are made of metal, and in other embodiments, only the upper edge of the second fitting hole 413 along the Z-axis direction is made of metal, which is used to contact and push the elastic member 313 elastically deformed relative to the moving spring body 312 to make the moving contact set 314 and the stationary contact set 32 close. In this embodiment, the upper edge is used to contact and push the elastic member 313 elastically deformed relative to the moving spring body 312 to make the moving contact set 314 and the stationary contact set 32 close. In other embodiments, the moving spring 310 only has the moving spring body 312, and the upper edge contacts and pushes the moving end 316 of the moving spring body 312 to make the moving contact set 314 and the stationary contact set 32 close.

[0088] Referring to Figure 16 to Figure 20 , Figure 16 to Figure 20 The internal structure and electrical structure of the relay 1 in this embodiment are shown. As shown in Figure 16 and Figure 17As shown, the first magnetic circuit unit 21a and the second magnetic circuit unit 21b are mounted on the base 11 along the Z-axis. The two sliding engagement portions 411 of the first pusher 41a are respectively slidably engaged with the corresponding slide grooves 113 along the Z-axis. The two sliding engagement portions 411 of the second pusher 41b are respectively slidably engaged with the corresponding slide grooves 113 along the Z-axis. The first load terminal 33a, the second load terminal 33b, and the third load terminal 33c are respectively fixedly connected to the base 11. The first moving spring assembly 31a is fixedly connected to the first load terminal 33a, and the second moving spring assembly 31b is fixedly connected to the second load terminal 33b. The first stationary contact assembly 32a and the second stationary contact assembly 32b are respectively fixedly connected to the third load terminal 33c. The swinging portion 225 of the first magnetic circuit unit 21a extends into the first mating hole 412 of the first pusher 41a. The swinging portion 225 of the second magnetic circuit unit 21b extends into the first mating hole 412 of the second pusher 41b. The moving ends 316 of each moving spring 310 in the first moving spring group 31a and each elastic element 313 extend into the second mating hole 413 of the first pusher 41a, and the moving ends 316 of each moving spring 310 in the second moving spring group 31b and each elastic element 313 extend into the second mating hole 413 of the second pusher 41b.

[0089] like Figure 18 As shown, after the relay 1 in this embodiment is connected, the first magnetic circuit unit 21a controls the first switch 34a to close or open via the first pusher 41a. The two ends of the first switch 34a are respectively connected to the first load terminal 33a and the third load terminal 33c, and the first switch 34a independently controls the connection between the first load terminal 33a and the third load terminal 33c. The second magnetic circuit unit 21b controls the second switch 34b to close or open via the second pusher 41b. The two ends of the second switch 34b are respectively connected to the second load terminal 33b and the third load terminal 33c, and the second switch 34b independently controls the connection between the second load terminal 33b and the third load terminal 33c. The first switch 34a and the second switch 34b must be closed simultaneously for the first load terminal 33a and the second load terminal 33b to conduct.

[0090] like Figure 19 and Figure 20 As shown, in this embodiment, regardless of the situation, the position where the pushing member 41 abuts against the swing portion 225 is closer to the rotation axis Q than the second mating hole 413 along the X-axis direction. In this embodiment, on the first projection plane perpendicular to the Z-axis direction, the projection of the sliding mating portion 411 at least partially overlaps with the projection of at least one load terminal 33. Specifically, the projection of the sliding mating portion 411 at least partially overlaps with the projection of the third load terminal 33c. Since the swing portion 225 is configured such that the first intersection point 229 is located above the rotation axis Q along the Z-axis direction in this embodiment, the sliding mating portion 411 and the third load terminal 33c will not abut against each other along the Z-axis direction.

[0091] like Figure 19 As shown, when switch 34 is in the open state, the moving contact 311 is disconnected from the stationary contact 320, the swing part 225 abuts upward against the first abutment part 414, and the lower edge of the second mating hole 413 abuts upward against the moving end 316. When switch 34 needs to be closed, the swing part 225 moves downward and abuts against the second abutment part 415, and the moving contact 311 contacts the stationary contact 320. After the moving contact 311 contacts the stationary contact 320, the swing part 225 continues to move downward into overtravel, and the pusher 41 continues to move downward until... Figure 20 As shown, the swing part 225 moves downward to its limit. The elastic element 313 deforms to its limit, and the moving contact 311 and the stationary contact 320 are completely closed. When the switch 34 needs to be opened, the swing part 225 abuts upward against the first abutting part 414, driving the pushing member 41 to move upward. The lower edge of the second mating hole 413 of the pushing member 41 moves upward until it abuts the moving end 316, and continues to drive the moving end 316 to move upward. At this time, the elastic element 311 returns to its deformation, finally reaching the desired state. Figure 19 The switch 34 shown is in the off state.

[0092] In this embodiment, the assembly process of relay 1 includes:

[0093] Step 1: Assemble the magnetic circuit part 20 and the pushing part 40 into the first base 110 to form as shown. Figure 21 The first assembly 51 is shown, and the contact portion 30 is assembled to the second base 120 to form as shown. Figure 22 The second assembly 52 is shown. In step 1, the process of assembling the magnetic circuit portion 20 and the pushing portion 40 to the first base 110 to form the first assembly 51 includes the following steps:

[0094] Step 1.1: Assemble the armature assembly 220 and the support 230 into the coil assembly 210 to form the magnetic circuit unit 21;

[0095] Step 1.2: Install each magnetic circuit unit 21 and the corresponding pusher 41 onto the first base 110. During the installation of each magnetic circuit unit 21 and the corresponding pusher 41, insert the swing part 225 into the first mating hole 412, insert the sliding mating part 411 downward along the Z-axis into the corresponding slide groove 113, insert the support 230 downward along the Z-axis into the slot 112, and insert each coil terminal 213 downward along the Z-axis through the first base 110.

[0096] Step 2: Insert the first assembly 51 and the second assembly 52 into place along the X-axis, and extend the movable spring assembly 31 into the second mating hole 413 along the X-axis; and

[0097] Step 3: Cover the cover to the base 11, and fixed with the base 11.

[0098] Referring to Figure 23 and Figure 24 , Figure 23 and Figure 24 It is shown that the first combination 51 and the second combination 52 are inserted into the position, and the relative fixation between the first combination 51 and the second combination 52 is fixed. As Figure 23 and Figure 24 It is shown that the first seat body 110 and the second seat body 120 are inserted into the position, and the first seat body 110 and the second seat body 120 are inserted into the position. The first block 122 is inserted into the first interval 117 along the X axis direction, and the first block 118 and / or the second block 126 is elastically deformed. After being inserted into the position, the first block 118 and the second block 126 are restored to the deformation and are hooked with each other, and are clamped and matched along the X axis direction. After being inserted into the position, the plug 122 is limited to cooperate with the corresponding two second limiting blocks 116 along the Y axis direction. After being inserted into the position, the third load terminal 33c extends into the interval between the first limiting block 115 and the second limiting block 116 along the X axis direction, and the third load terminal 33c is limited to cooperate with the first limiting block 115 and the second limiting block 116 along the Z axis direction. In the embodiment, the third load terminal 33c is gap matched with the first limiting block 115 and the second limiting block 116 along the Z axis direction, and the length of the second limiting block 116 matched with the third load terminal 33c along the X axis direction is less than the length of the first limiting block 115 matched with the third load terminal 33c along the X axis direction, so that the end of the second combination 52 away from the first combination 51 is allowed to be deflected downward relative to the first combination 51 when the first combination 51 or the second combination 52 is subjected to the downward force along the Z axis direction.

[0099] In the embodiment, when the cover is fixed with the base 11, the first combination 51 and the second combination 52 can be prevented from being separated along the X axis direction.

[0100] In the embodiment, the magnetic circuit part 20, the contact part 30 and the pushing part 40 are all attached to the shell, and the magnetic circuit part 20 includes at least two magnetic circuit units 21, the moving spring group 210, the static contact group 32 and the pushing member 41 are all arranged correspondingly with the magnetic circuit unit 20. Therefore, at least two switches capable of being independently controlled are packaged in the shell 10 of one relay. Compared with the prior art, the material of the shell 10 is saved, and the packaging volume of the relay 1 is reduced. When more than two switches are realized, the occupied space is smaller than that of the prior art.

[0101] In the embodiment, at least one load terminal 33 is shared by at least two switches 34 to form a common terminal 330, through which the number of load terminals 33 is reduced, the integration of the load terminals 33 is improved, and the space occupation can be further reduced, and the cost is reduced. It can also be applied to most scenarios through flexible connection between the load terminals 33 and each moving spring group 31 and static contact group 32.

[0102] In the embodiment, the common terminal 330 is a load terminal 33, which can be selected to be electrically connected to an external circuit or not electrically connected to an external circuit. When connected to an external circuit, at least two external circuits can be controlled through the common terminal 330, or a parallel relationship can be established, or a total circuit and a branch circuit control can be established; when not electrically connected to an external circuit, the common terminal 330 becomes a component bridging two or more switches 34, so that two or more switches 34 form a series relationship; therefore, it can be flexibly applied to various scenarios through different wiring methods. Since each switch 34 is controlled separately, such series or parallel relationship makes two switches form an "and" or "or" logical relationship, which can not only be applied to simple logic calculation, but also be applied to scenarios with higher safety and reliability requirements, avoiding uncontrolled switches due to failure of a single function part formed by the magnetic circuit unit 21, the pusher 41, the moving spring group 31 and the static contact group 32.

[0103] In the embodiment, the electrical connection relationship inside the relay 1 can be selected according to customer needs, especially the loading mode of the external circuit, so that the relay has greater versatility.

[0104] In the embodiment, each coil terminal 213 and each load terminal 33 extends downward along the Z-axis direction, which is convenient for electrical connection with the circuit board.

[0105] In the embodiment, the winding axis P of the coil winding 212 extends along the Z-axis direction, which is consistent with the extension direction of each coil terminal 213 and each load terminal 33, thereby reducing the board area of the relay 1.

[0106] In the embodiment, each magnetic circuit unit 21 is arranged along the Y-axis direction, each moving spring group 31 is arranged along the Y-axis direction, each pusher 41 is arranged along the Y-axis direction, and the magnetic circuit part 20 and the contact part are arranged along the X-axis direction, so that each function part is arranged perpendicular to the Y-axis direction, and each function part is arranged along the Y-axis direction, and each function part does not need to be staggered in space with each other, thereby reducing the structural complexity and assembly difficulty.

[0107] In the embodiment, the moving spring group 31 includes at least two moving springs 310, which can reduce the total contact resistance between the moving contact 311 and the static contact 320, reduce the heat generation, and reduce the power consumption.

[0108] In this embodiment, each moving spring 310 is provided with one moving contact 311, compared with the scheme that the same moving spring 310 is provided with multiple moving contacts, it can avoid that some moving contacts 311 cannot be effectively closed with the static contact 320 when the moving spring 311 moves, or it can avoid that some moving contacts 310 increase the contact resistance when they are closed due to the inability to withstand uniform force.

[0109] In this embodiment, by providing the elastic member 313 between the moving spring body 312 and the pushing member 41, the pushing member 41 can achieve overtravel, and the moving contact 311 can be more reliably closed with the static contact 320.

[0110] In this embodiment, the pushing member 41 directly pushes the moving end 316 of the moving spring body 312 to drive the moving contact 311 to be disconnected with the static contact 320, the breaking time is shorter, so the arc drawing time is shorter, and the service life of the relay 1 is higher.

[0111] In this embodiment, the elastic member 313 is a compression spring connected to the moving spring body 312, compared with the elastic member 313 being connected to the moving spring body 312 in other ways or other forms of elastic member 313, the elastic member 313 has stronger impact resistance, which can avoid the elastic member 313 from being offset relative to the moving spring body 312 due to impact.

[0112] In this embodiment, the elastic member 313 and the moving spring body 312 are connected at the position of the moving contact 311, so that the force of the elastic member 313 when deformed can be more effectively transmitted to the moving contact 311, the moving contact 311 can be more reliably closed with the static contact 320, and the load capacity of the relay 1 is higher.

[0113] In this embodiment, the two supporting members 230 are fixed relative to the coil assembly 210 and are located on both sides of the coil assembly 210 along the Y-axis direction, which can effectively support the armature assembly 220, so that the armature assembly 220 can rotate relative to the coil assembly 210.

[0114] In this embodiment, the connecting hole 231 on the supporting member 230 and the protruding part 217 on the magnetic driving end 216 are inserted and matched along the Y-axis direction, which can more accurately position the supporting member 230 relative to the yoke 215. Since the supporting member 230 is the movement reference of the armature assembly 220, when the armature assembly 220 rotates relative to the coil assembly 210, the attracting part 226 can be more accurately attracted to the magnetic driving end 216.

[0115] In this embodiment, the armature assembly 220 further includes a permanent magnet 221, and the two armatures 222 are connected to two poles of the permanent magnet 221, so that the relay 1 has a magnetic retention function, and only needs to be controlled by a pulse electric signal to change and maintain the open or closed state, thereby saving electric energy.

[0116] In the embodiment, the main body 223, the two convex shafts 224, the swing part 225, the two armatures 222 and the permanent magnet 221 are integrally formed by insert injection molding, so that the armature assembly 220 is lower in manufacturing difficulty and less likely to cause loss of movement stroke due to tolerance accumulation.

[0117] In the embodiment, the moving spring group 31 extends along the X-axis direction, which can reduce the height of the contact part 30 along the Z-axis direction, is more conducive to saving the space of the relay 1 along the Z-axis direction, and is also conducive to increasing the contact gap between the moving contact 311 and the stationary contact 320 along the Z-axis direction and improving the withstand voltage capacity of the relay 1.

[0118] In the embodiment, the two sliding grooves 113 are respectively in sliding cooperation with the pushing member 41 along the Z-axis direction, and the groove walls of the two sliding grooves 113 are in limiting cooperation with the pushing member along the Y-axis direction and the X-axis direction. The determinacy of the movement direction of the pushing member 41 can be improved, and the freedom of the pushing member 41 in other directions is constrained, so that the pushing member 41 is less likely to displace or deform along the X-axis direction and the Y-axis direction when subjected to uncertain impact, and the reliability of the relay 1 is improved.

[0119] In the embodiment, the farthest part of the groove wall surface of the sliding groove 113 from the bottom of the other sliding groove 113 is located at the circular arc segment 113b along the Y-axis direction, which is more conducive to resisting the impact force of the pushing member 41 along the Y-axis direction, so that the impact force is dispersed to the housing 10, and the circular arc segment 113b can automatically correct the posture of the pushing member 41 when the pushing member 41 is subjected to impact force in an uncertain direction.

[0120] In the embodiment, the straight segment 113a is arranged, which is more conducive to guiding the pushing member 41 when the pushing member 41 is inserted into the sliding groove 113 along the Z-axis direction. The distance between the vertex of the inwardly converging segment 113c and the straight segment 113a is less than the diameter of the circular arc segment 113b, and the sector angle of the circular arc segment 113b is greater than 180 degrees, so that the stability of the circular arc segment 113b can be maintained, and the circular arc segment 113b is less likely to deform.

[0121] In the embodiment, the housing 10 is provided with the sliding groove 113 in sliding cooperation with the sliding cooperation part 411 of the pushing member 41, the two sliding grooves 113 are respectively in sliding cooperation with the sliding cooperation part 41 along the Z-axis direction, the groove wall surfaces of the two sliding grooves 113 are in limiting cooperation with the two sliding cooperation parts 41 along the Y-axis direction and the X-axis direction, and the groove wall surface of the sliding groove 113 is provided with the inwardly converging segment 113c, so that when the pushing member 41 is deflected on the plane formed by the X-axis and the Y-axis, the deflection amount is effectively limited, the determinacy of the movement direction of the pushing member 41 can be improved, and the freedom of the pushing member 41 in other directions is constrained, so that the pushing member is less likely to displace or deform when subjected to impact in an uncertain direction, and the reliability of the relay 1 is improved.

[0122] In the embodiment, the sliding fitting part 411 has a larger dimension along the X-axis direction than the thickness of the base 410 along the X-axis direction, which is more conducive to the sliding fitting part 411 to have the same gap with the sliding groove 113, so that the pusher 41 is less likely to be inclined along the X-axis direction to cause jamming and change the contact point with the moving spring 310 to avoid the stroke of the moving contact 311 deviating from the design purpose, ensure the distance between the moving contact 311 and the stationary contact 320, and thus ensure the withstand voltage capability of the relay 1.

[0123] In the embodiment, the inner recess 411a is arranged on the circular arc surface of the part of the sliding fitting part 411 extending into the sliding groove 113, so that the sliding fitting part 411 has a smaller contact surface with the groove wall surface of the sliding groove 113, is less likely to be rubbed or jammed, and slides more smoothly.

[0124] In the embodiment, the third load terminal 33c is partially located below the sliding fitting part 411, which is conducive to increasing the overcurrent area of the third load terminal 33c as the common terminal 330 to achieve greater carrying capacity, and at the same time, is conducive to reducing the heat generation. The first intersection 229 is located above the rotation axis Q, that is, the oscillating part 225 is upwardly biased relative to the main body 223, so that the sliding fitting part 411 is less likely to interfere with the load terminal 33 located therebelow, the movement stroke of the pusher 41 is more easily ensured, the distance between the moving contact 311 and the stationary contact 320 can be increased, and the withstand voltage capability can be enhanced.

[0125] In the embodiment, all positions where the pusher 41 contacts the oscillating part 225 are closer to the rotation axis Q along the X-axis direction than the second fitting hole 413 (i.e., the position where the pusher 41 contacts the moving spring set 31), which is conducive to reducing the movement stroke of the pusher 41 along the Z-axis direction while ensuring the distance between the moving contact 311 and the stationary contact 320, and in particular, is conducive to reducing the highest point of the movement stroke of the pusher 41, and is conducive to making the highest point not exceed the highest point of the coil assembly 210, and thus is conducive to saving the height of the relay 1 in the Z-axis direction.

[0126] In the embodiment, the two sides of the first fitting hole 412 along the Z-axis direction are respectively provided with the first abutting part 414 and the second abutting part 415 adapted to abut against the oscillating part 225 from top to bottom, and the first abutting part 414 and the second abutting part 415 are both outwardly turned along the X-axis direction from the hole wall of the first fitting hole 412, so that the contact point of the oscillating part 225 with the pusher 41 can be moved along the outward turning method, and this is conducive to reducing the scraping between the oscillating part 225 and the pusher 41 or the base 410 of the pusher 41 made of metal material.

[0127] In the embodiment, the first abutting portion 414 and the second abutting portion 415 are outwardly turned along the X-axis direction, which is beneficial to make the pusher 41 thinner, and can ensure that the pusher 41 always abuts against the swing portion 225 correctly, which is beneficial to realize the miniaturization of the relay 1 and to ensure that the swing portion 225 always abuts against the second abutting portion 415 at the lowest point, so that when the dynamic contact 311 contacts the static contact 320 and the pusher 41 enters the overstroke through the elastic member 313, the overstroke distance along the movement direction of the pusher 41 can make the dynamic contact reliably abut against the static contact. The surfaces of the first abutting portion 414 and the second abutting portion 415 adapted to contact the swing portion 225 are smooth curved surfaces, the friction coefficient between the pusher 41 and the swing portion 225 is smaller, and the service life of the swing portion 225 is higher.

[0128] In the embodiment, the surfaces of the first abutting portion 414 and the second abutting portion 415 adapted to contact the swing portion 225 are smooth curved surfaces, the friction coefficient between the pusher 41 and the swing portion 225 is smaller, and the service life of the swing portion 225 is higher.

[0129] In the embodiment, the part of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent, which can reduce the size of the pusher 41 along the Z-axis direction, and is more beneficial to realize the above functions in the case of small space along the Z-axis direction. In particular, when the swing portion 225 is biased upward relative to the main body 223, the distance along the X-axis direction between the highest point of the upward swing of the swing portion 225 and the lowest point of the downward swing of the swing portion 225 will be larger, and the part of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent, which is beneficial to ensure that the swing portion 225 can correctly abut against the first abutting portion 414 and the second abutting portion 415 when the swing portion 225 swings upward to the highest point and downward to the lowest point, so that the dynamic contact 311 can correctly close or open the static contact 320.

[0130] In the embodiment, when the part of the pusher 41 between the first abutting portion 414 and the second abutting portion 415 is bent, the outward turning directions of the first abutting portion 414 and the second abutting portion 415 are away from each other, which is beneficial to make the contact points between the swing portion 225 and the first abutting portion 414 and the second abutting portion 415 closer along the X-axis direction, and to avoid that the swing portion 225 drives the pusher 41 to move and generates a larger reciprocating force along the X-axis direction on the pusher 41.

[0131] In the embodiment, the magnetic circuit portion 20, the contact portion 30 and the push portion 40 are all attached to the base 11, and the movement relationship between them is more accurate based on the base 11. The packaging is realized by covering the base 11 along the Z-axis direction, and the assembly is simpler.

[0132] In the embodiment, the support 230 is not only inserted and matched with the convex part 217 of the magnetic driving end 216 along the Y-axis direction, but also inserted and matched with the slot 113 of the shell 10 along the Z direction, the freedom of the support 230 is completely limited, which is more conducive to supporting the armature assembly 220, so that the rotation axis Q of the armature assembly 220 cannot move along the X-axis direction, and when the relay 1 is impacted, the armature assembly 220 with large mass can transmit the impact force to the support 230 through the convex shaft 224, and the support 230 can transmit the force to the shell 10, so that the relative displacement between the components is not easy to occur.

[0133] In the embodiment, since the swing part 225 and the moving spring group 31 are respectively inserted and matched with the first matching hole 413 and the second matching hole 413 on the pushing part 41 in the directions opposite to each other, the base 11 is divided into the first seat body 110 and the second seat body 120, the first seat body 110 forms the first combined body 51 with the magnetic circuit part 20 and the pushing part 40, the second seat body 120 forms the second combined body 51 with the contact part 30, and the first combined body 51 and the second combined body 52 are inserted and matched along the X-axis direction, so that the moving spring group 31 is inserted into the second matching hole 413 along the X-axis direction during the insertion and matching process, the relay 1 in the configuration of the application can be more easily assembled, and the swing part 225 and the moving spring group 31 can be prevented from being inserted and matched with the pushing part 41 in the directions opposite to each other at the same time.

[0134] In the embodiment, the first combined body 51 and the second combined body 52 are prevented from being separated from each other along the X-axis direction before being fixed with the cover body through the first clamping block 118 and the second clamping block 126.

[0135] In the embodiment, the first combined body 51 and the second combined body 52 are fixed relative to each other along the Z-axis direction through the load terminal 33 and the first limiting block 115 and the second limiting block 116 along the Z-axis direction. The load terminal 33 is inserted into the first limiting block 115 and the second limiting block 116 along the X-axis direction, which can increase the flow area of the load terminal 33, and is conducive to improving the load capacity.

[0136] In the embodiment, the load terminal 33 is in clearance fit with the first limiting block 115 and the second limiting block 116 along the Z-axis direction, and the length of the fit between the second limiting block 116 and the load terminal 33 along the X-axis direction is smaller than the length of the fit between the first limiting block 115 and the load terminal 33 along the X-axis direction, which is beneficial for the second assembly 52 to be deflected downward relative to the first assembly 51 to make the second clamping block 126 disengage from the first clamping block 118, so that the first assembly 51 and the second assembly 52 can be quickly disassembled. At the same time, since the length of the fit between the first limiting block 115 and the load terminal along the X-axis direction is larger, the positions where the second assembly 52 and the first assembly 51 are inserted into each other are less likely to sink due to the impact force in the Z-axis direction downward, avoiding the positions where the first assembly 51 and the second assembly 52 are inserted into each other from becoming weak points after the relay 1 is assembled.

[0137] In the embodiment, the insertion block 122 is in limiting fit with the corresponding two second limiting blocks 116 along the Y-axis direction, so that the first assembly 51 and the second assembly 52 are fixed relative to each other along the Y-axis direction.

[0138] In the embodiment, the first clamping block 118 is arranged on the side of the second limiting block 116, and the second clamping block 126 is arranged on the side of the insertion block 122, so that the first clamping block 118 and the second clamping block 126 have greater connection strength and are less likely to disengage.

[0139] In the embodiment, the part of the pushing member 41 adapted to contact the moving spring set 31 is made of metal material, and in other embodiments, the part of the pushing member 41 adapted to contact and push the moving contact 311 and the static contact 320 of the moving spring 310 to close is made of metal material. Therefore, when the external current load is large, causing the moving spring set 31 to generate a large amount of heat, compared with the technical solution in which the part contacting the moving spring set 31 is made of plastic material, the pushing member 41 can avoid softening or even melting due to the heat of the moving spring set 31, so that the closing stroke of the moving spring set 31 does not match the design, causing the load capacity of the relay 1 to decrease, thereby improving the load capacity and reliability of the relay 1.

[0140] In the embodiment, the part of the pushing member 41 adapted to contact the moving spring set 31 and the part adapted to contact the armature assembly 220 are both formed on the base body 410, and the base body 410 is made of metal material, which can also avoid the pushing member 41 from softening or even melting due to the heat of the moving spring set 31.

[0141] In the embodiment, the sliding fit part 411 is in sliding fit with the housing 10, which can improve the certainty of the movement direction of the pushing member 41, and constrain the freedom of the pushing member 41 in other directions, so that the pushing member is less likely to displace or deform when subjected to impact in an uncertain direction, thereby improving the reliability of the relay 1.

[0142] In this embodiment, the sliding fitting part 411 is made of plastic material, which is easier to slide with the shell 10 also made of plastic material, and is not easy to produce scratches to cause jamming or deviation. The sliding fitting part 411 is integrally formed with the base 410 by insert injection molding, which has higher dimensional accuracy and smaller dimensional tolerance.

[0143] In this embodiment, when the base 41 is a stainless steel sheet metal part, it is easier to process and form, has a simpler structure, higher strength, and is more conducive to miniaturization design. When the base 41 is an aluminum casting or an aluminum alloy casting, it is easier to process and form, has lower density, higher strength, and lower cost.

[0144] In this embodiment, the other two load terminals 33 except the common terminal 330 are arranged along the Y-axis direction, which is consistent with the arrangement direction of each moving spring group 31, and is easier to connect with the moving spring group 31.

[0145] In this embodiment, the part of the common terminal 330 extending downward is located in the middle of the base 11 along the Y-axis direction, which has higher space utilization.

[0146] In this embodiment, each load terminal 33 is provided with a connecting part 331 perpendicular to the Z-axis direction, so that the load terminal 33 can be laid along the X-axis and Y-axis, which not only can reduce the height of the relay 1 along the Z-axis direction, but also can increase the current-carrying area of the load terminal 33, improve the load capacity of the relay 1, and is particularly suitable for application in a large current environment, such as a large current environment with a load current of 80A. At this time, by setting the common terminal 330, the structure of the relay 1 can be more compact and occupy less space when meeting the requirements of multi-way control function in a large current environment.

[0147] In this embodiment, the connecting parts 331 of the three load terminals 33 are arranged in two layers along the Z-axis direction, so that all the switches 34 are located between the two layers of connecting parts 331, which is conducive to reducing the height of the relay 1 along the Z-axis direction and fully utilizing the space along the X-axis direction and the Y-axis direction.

[0148] In this embodiment, the connecting part 331 of the common terminal 330 is provided with a first arm 332 and a second arm 333 extending away from each other along the X-axis direction and corresponding to the magnetic circuit unit, so that the common terminal 330 has a larger current-carrying area when occupying one of the two layers along the Z-axis direction.

[0149] In this embodiment, the connecting parts 331 of the other two load terminals 33 are farther away from the magnetic circuit part along the X-axis direction than the first arm and the second arm, so that the three load terminals 33 use less material, have lower cost, and have a more compact structure.

[0150] In this embodiment, the assembly method of the relay 1 can avoid that the swing part 225 and the moving spring group 31 are inserted with the pushing piece 41 at the same time along directions opposite to each other.

[0151] In this embodiment, the magnetic circuit unit 21 is assembled first, and then the magnetic circuit unit 21 and the corresponding pusher 41 are attached to the first seat body 110 along the Z-axis direction, so that the magnetic circuit part 20 and the pusher part 40 are assembled to the first seat body 110 mainly along the Z-axis direction, and the assembly process is simpler.

[0152] Embodiment Two

[0153] Referring to Figure 25 , Figure 25 The pusher 41 in embodiment two is shown. As Figure 25 shown, in this embodiment, the pusher 41 also has a base body 410 and two sliding fit parts 411, but the pusher 41 is entirely made of metal material, and specifically can be made of stainless steel sheet metal parts or aluminum cast parts or aluminum alloy cast parts. In this embodiment, the casting aluminum process is adopted. Since the sliding fit part 411 is made of metal material, correspondingly, the inner wall of the sliding groove 113 in contact with the sliding fit part 411 can be made of metal material to avoid scratching. The other parts of this embodiment are the same as those of embodiment one.

[0154] In this embodiment, the pusher 41 is entirely made of metal material, has higher strength, and is less likely to be affected by the heating of the moving spring group.

[0155] In this embodiment, when the pusher 41 is made of stainless steel sheet metal parts, it is easier to process and form, has a simpler structure, higher strength, and is more conducive to miniaturization design; when the pusher is made of aluminum cast parts or aluminum alloy cast parts, it is easier to process and form, has lower density, higher strength, and lower cost.

[0156] The other parts of this embodiment are the same as those of embodiment one, and will not be described again.

[0157] The above description of the specification and the embodiments is used to explain the protection scope of the present application, but does not constitute a limitation on the protection scope of the present application.

Claims

1. A relay characterized by, The relay comprises a shell and a pusher, the shell is provided with two sliding grooves along Y-axis direction and extending along Z-axis direction, the pusher is slidably connected with the sliding grooves along Z-axis direction at two sides along Y-axis direction.

2. A relay according to claim 1, characterised in that The relay further comprises an armature assembly and at least one moving spring corresponding to the pusher; the pusher comprises a base body and a sliding fitting part; the armature and the moving spring are both fitted with the base body, so that the armature drives the moving spring to move through the pusher; the sliding fitting part is adapted to extend into the sliding groove and is slidably connected with the sliding groove.

3. A relay according to claim 2, wherein the magnetic field generated by the coil is arranged to be substantially uniform across the face of the armature. The base body is made of metal material, the sliding fitting part and the shell are made of plastic material, and the base body and the sliding fitting part are integrally formed by insert injection molding.

4. A relay according to claim 3, wherein the magnetic field generated by the coil is arranged to be substantially uniform across the face of the armature. The size of the sliding fitting part along X-axis direction is greater than the thickness of the base body.

5. A relay as described in claim 2, characterized in that, The groove wall surface of the sliding groove is provided with a circular segment, the circular segment is in the shape of a circular surface, and the groove wall surface of the sliding groove farthest from the bottom of the other sliding groove along Y-axis direction is located on the circular segment.

6. A relay according to claim 5, wherein the magnetic field generated by the coil is arranged to be substantially uniform across the face of the armature. The groove wall surface of each sliding groove further comprises a flat segment and an inward segment connected with the circular segment, the flat segment and the inward segment are opposite along Y-axis direction, the flat segment is in the shape of a plane perpendicular to X-axis direction, the flat segments of the two sliding grooves are located on the same plane, at least one straight line passing through the projection center of the circular segment intersects with the projection of the circular segment at two points in the projection plane perpendicular to Z-axis direction, and the distance between the top end of the inward segment along X-axis direction and the flat segment is less than the diameter of the circular segment in the projection plane perpendicular to Z-axis direction.

7. A relay as described in claim 5 or 6, characterized in that, The part of the sliding fitting part adapted to extend into the sliding groove is provided with a circular-arc-shaped outer edge matched with the circular segment, at least one concave part is formed on the circular-arc-shaped outer edge, and the concave part extends along Z-axis direction.

8. A relay according to claim 2, wherein the magnetic circuit is formed by a magnetic core and a magnetic yoke, and the magnetic core is disposed in the magnetic yoke. The armature assembly rotates relative to the shell around a rotation axis extending along Y-axis direction and is provided with a swing part, the base body is provided with a first fitting hole for the swing part to extend into and a second fitting hole for the moving spring to extend into along X-axis direction, the direction in which the swing part extends into the first fitting hole is opposite to the direction in which the moving spring extends into the second fitting hole; all positions of the pusher in contact with the swing part are closer to the rotation axis along X-axis direction than the second fitting hole.

9. A relay according to claim 8, wherein the relay is a latching relay. The two sides of the first fitting hole along Z-axis direction are provided with a first abutting part and a second abutting part adapted to abut against the swing part; the first abutting part and the second abutting part are outwardly bent from the hole wall of the first fitting hole along X-axis direction; the surfaces of the first abutting part and the second abutting part adapted to contact with the swing part are both smooth curved surfaces.

10. A relay according to claim 9, wherein the relay is a latching relay. The relay comprises a moving contact and a stationary contact, the moving contact is downwardly closed with the stationary contact, the first fitting hole is located above the second fitting hole, the first abutting part is located above the second abutting part; the part of the pusher between the first abutting part and the second abutting part is bent in the direction closer to the rotation axis along the upward direction, the outward bending directions of the first abutting part and the second abutting part are opposite to each other, and the first abutting part is outwardly bent away from the rotation axis.

11. A relay according to claim 2, wherein the relay is a latching relay. The relay further comprises a coil assembly and two supporting members corresponding to the pusher, the relay further comprises at least two load terminals, the coil assembly comprises a coil frame, a coil winding and a coil terminal, and is provided with two magnetic driving ends, the coil winding is wound on the coil frame, the winding axis of the coil winding extends along the Z-axis direction, the coil terminal is electrically connected with the coil winding and penetrates the coil frame and the shell along the Z-axis direction downward, the two magnetic driving ends are arranged along the Z-axis direction, the two magnetic driving ends drive the armature assembly to rotate by converting the polarity, each magnetic driving end is provided with a protruding part on both sides along the Y-axis direction, the two supporting members are fixed relative to the coil assembly and support the armature assembly, the shell is provided with a slot for the two supporting members to be correspondingly inserted along the Z-axis direction, each supporting member is provided with two connecting holes corresponding to the two protruding parts on the same side along the Y-axis direction, and the connecting holes are inserted and matched, each load terminal is fixedly connected with the moving spring and the static contact, and each load terminal penetrates the shell along the Z-axis direction downward and is fixedly connected with the shell.

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